Add rule for missing placeholders in f-strings

.flake8

@@ -0,0 +1,5 @@
+[flake8]
+ignore = E203, E266, E501, W503, F403, F401, F541
+max-line-length = 89
+max-complexity = 18
+select = B,C,E,F,W,T4,B9

src/update_results_table.py

@@ -1,9 +1,6 @@
 import os
-import sys
-import time
-from glob import glob
 from pathlib import Path
-from subprocess import PIPE, STDOUT, run
+from subprocess import run
 
 from pytablewriter import MarkdownTableWriter
 from pytablewriter.style import Style
@@ -22,8 +19,13 @@ def write_md(results):
     """
     Write to README.md
     """
-    with open("../README.md", "a") as f:
-        # f.write(str(results))
+    initial_message = (
+        f"Having a bit of fun trying to solve the problems from "
+        f"https://projecteuler.net/archives using different programming "
+        f"languages for learning purposes.\n\n"
+    )
+    with open("../README.md", "w") as f:
+        f.write(initial_message)
         results.stream = f
         results.write_table()
 
@@ -49,7 +51,6 @@ def timing_Python(path=None, exec_only=1):
     os.chdir(Path(path))
     python_timings, python_results = [], []
     for script in scripts[:exec_only]:
-        # print(f"Executing {script}")
         _res = run(
             ["python3", f"{script}"], capture_output=True, text=True
         ).stdout.split("\n")
@@ -66,7 +67,6 @@ def timing_Julia(path=None, exec_only=1):
     os.chdir(Path(path))
     julia_problem_numbers, julia_timings, julia_results = [], [], []
     for script in scripts[:exec_only]:
-        # print(f"Executing {script}")
         _res = run(["julia", f"{script}"], capture_output=True, text=True).stdout.split(
             "\n"
         )
@@ -90,15 +90,11 @@ def execute(combine_columns=True, nproblems=-1):
     assert len(python_timings) == len(julia_timings)
 
     not_equal = []
-    for i, (pr, jr) in enumerate(zip(python_results, julia_results), start=1):
-        # print(f"Results for problem {i} are equal? {int(pr[22:]) == int(jr[23:])}")
-        if not int(pr[22:]) == int(jr[23:]):
-            not_equal.append(i)
-        # try:
-        # int(pr[22:]) == int(jr[23:])
-        # except ValueError:
-        # print(f"Results for problem {i} are not identical!\n")
-        # continue
+    for nproblem, (python_res, julia_res) in enumerate(
+        zip(python_results, julia_results), start=1
+    ):
+        if not int(python_res[22:]) == int(julia_res[23:]):
+            not_equal.append([nproblem, int(python_res[22:]), int(julia_res[23:])])
 
     if combine_columns:
         headers = [
@@ -113,8 +109,13 @@ def execute(combine_columns=True, nproblems=-1):
                 python_timings, python_results, julia_timings
             )
         ]
+        discrepancies = [
+            f"\nDiscrepancies in problem {npb}. "
+            f"Python result is {py_r} and in Julia is {jl_r}."
+            for npb, py_r, jl_r in not_equal
+        ]
         writer_comb = MarkdownTableWriter(
-            table_name=f"Results for problems {not_equal} are not correct",
+            table_name="\n".join(discrepancies),
             headers=headers,
             value_matrix=value_matrix,
             column_styles=[
@@ -126,8 +127,6 @@ def execute(combine_columns=True, nproblems=-1):
             margin=1,  # add a whitespace for both sides of each cell
         )
         writer_comb.set_indent_level(3)
-        writer_comb.write_table()
-        writer_comb.write_null_line()
 
         return writer_comb
 
@@ -161,15 +160,13 @@ def execute(combine_columns=True, nproblems=-1):
                 ],  # specify styles for each column
                 margin=1,  # add a whitespace for both sides of each cell
             )
-            writer.write_table()
-            writer.write_null_line()
 
             return writer
 
 
 if __name__ == "__main__":
-    md = read_md()
+    # md = read_md()
     # print(md)
     res = execute(combine_columns=True, nproblems=-1)
     # print(res)
-    # write_md(res)
+    write_md(res)